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A book seller gains 30% on the cost price by selling a book for $130.Calculate the cost price of the book.​
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A book seller gains 30% on the cost price by selling a book for $130.Calculate the cost price of the book.​

User Goulashsoup
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5 votes

Answer:

Let the cost price be x

  • Selling price, S.P. = 130
  • Gain % = 30%


\rm{C.P. = (S.P. * 100)/(100+ gain \% )}


\rm{C.P. = (130 * 100)/(100+30)}


\rm{ C.P. = (130)/(30) }


\large{\boxed{\rm{ C.P. = (13)/(3)}}}

User Splaktar
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